/*
 * @Author: YaYa
 * @Date: 2021-12-27 15:16:50
 * @LastEditTime: 2021-12-27 15:27:01
 * @LastEditors: YaYa
 * @Description: 
 * @FilePath: \study\day\6-js声明.js
 * 别乱动！
 */
// 声明
var a= 1;
// 打印
console.log(a)
let b= 'hello'
console.log(b)
